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Answer
The probability distribution
for
is incorrect because the total probability exceeds 1. Each probability should be
to sum to 1.
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Bonus Knowledge
Did you know that this probability distribution represents a discrete uniform distribution? In simpler terms, your random variable
has an equal likelihood of taking on any of the values from 0 to 5, making this scenario particularly fair and fun! It’s like rolling a fair die where the outcomes are equally probable!
When working with such distributions, a common mistake is assuming that all properties, like the mean and variance, behave the same way as intuitive “averages.” In this case, memorizing the formula for the mean,
where
is the number of outcomes, can help you avoid confusion. With 6 outcomes (0 to 5), the mean is
. Keep that in mind for a smoother analysis!